The third equation is properly balanced.
To figure this out, set up tables to check if each element has the same amount on both sides. If you do this for the third equation, copper, hydrogen, oxygen, and nitrogen are all balanced,
The first equation is incorrect due to the fact Iron, Fe, is not balanced on both sides. This is shown by the subscripts given.
The second equation is incorrect as Sulfur is not properly balanced and neither is sodium.
The fourth equation is incorrect as Aluminum is not properly balanced. On the reactants side, Aluminum is 4 while on the products, Aluminum is 8.
Hope this helps!
I cannot come up with a reaction which you can convert directly from Al to H2O.
But you can convert from Al2O3 to H2O by adding HCL solvent.
The household substances that will turn blue litmus paper red are: A) bleach and D) Vinegar. This is because bleach contains acidic solutions; and vinegar contains a percentage of organic acids for example, acetic acid.
Answer: (a) Mole fraction of 
is 0.66.
Mole fraction of 
is 0.33
(b) The partial pressure of is 1.98 atm.
The partial pressure of is 0.99 atm.
(c) The total pressure is 3.0 atm
Explanation:
Given: Volume = 
(1 
= 1 L) = 22.4 L
Moles of = 2.0 mol
Moles of = 1.0 mol
Total moles = (2.0 + 1.0) mol = 3.0 mol
Temperature = 273.15 K
- Now, using ideal gas equation the total pressure is calculated as follows.
where,
P = pressure
V = volume
n = number of moles
R = gas constant = 0.0821 L atm/mol K
T = temperature
Substitute the values into above formula as follows.
- The mole fractions of each component:
The mole fraction of is calculated as follows.
The mole fraction of is as follows.
- The partial pressures of each component:
Partial pressure of are as follows.
Partial pressure of are as follows.
